CN102506443A - Image flame detecting device - Google Patents
Image flame detecting device Download PDFInfo
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- CN102506443A CN102506443A CN2011102957127A CN201110295712A CN102506443A CN 102506443 A CN102506443 A CN 102506443A CN 2011102957127 A CN2011102957127 A CN 2011102957127A CN 201110295712 A CN201110295712 A CN 201110295712A CN 102506443 A CN102506443 A CN 102506443A
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Abstract
The invention discloses an image flame detecting device, which comprises an image sensor, a processing module, a video capture card, a computer and a display. The image sensor comprises an objective lens, a lens combination and an ocular lens, wherein the objective lens is made of quartz, the lens combination is arranged at the rear end of the objective lens, and the ocular lens is arranged at the rear end of the lens combination. The processing module comprises a camera and a DSP (digital signal processor), images transmitted by the image sensor are gathered on a target surface of the camera, an output end of the camera is connected with an input end of the DSP, an output end of the DSP is connected with an input end of the video capture card through a biaxial cable, an output end of the video capture card is connected with the computer, and the computer controls the display to display current flame images. The device is capable of effectively overcoming the shortcomings of aging caused by high temperature, unstable combustion and the like of a probe in an existing structure, and is applicable to various combustion conditions.
Description
Technical field
The invention belongs to the electronic measurement and control field, particularly a kind of image flame detecting device that is applicable to boiler of power plant.
Background technology
The stability of boiler of power plant burning directly influences the safety and the economical operation in power station; The bursting of boilers is because flammable mixture moment of boiler accumulated is lighted causes; This uncontrollable detonation will cause casualties and equipment damages; Seriously jeopardize the power plant safety operation, therefore must be equipped with flame detecting device multiple functional, dependable performance, guarantee when boiler extinguishment, to stop the fuel supply; Prevent that inflammable substance from building up in burner hearth or pipeline, and detonation takes place even cause the bursting of boilers.
Based on the image flame detecting device of CCD can full operating mode, keep watch on the flame status and the fuel system running status of burner, burner hearth continuously; The combustion position that shows the burner hearth fuel through main frame; Reasonably interlock with relevant main auxiliary machine signal simultaneously, to guarantee the safety and economic operation of whole unit.So fired power generating unit safe operation success or not to a great extent, depends on whether used image flame detector and burner hearth type fire-fighting protection device be reliable and perfect.Therefore, detecting furnace flame accurately, reliably, is the important means that prevents furnace explosion, guarantees safe operation of the boiler.Though existing flame detection equipment can satisfy the requirement that flame detects to a certain extent, has certain practicality.But, be applied to modern large-sized boiler and still have many problems, be listed below:
(1) flame detector head mirror face is prone to contaminatedly, and the flame detector wiring is often because of high temperature ageing damages, furnace wall side opening dust stratification and peripheral slagging scorification that flame detector is installed;
(2) flame detecting probe is little, and the angle of visual field and flame is the contradiction between the drift significantly:
Flame detection just must be aimed at the burner flame ignition zone with detection probe exactly, i.e. the bright part of flame root.In the actual motion, on the one hand, owing to the variation of coal, the adjustment of burning etc., flame often drifts about; On the other hand, for reduce interference and the influence to fire inspection device of other burner flame and background flame as far as possible, the probe visual angle generally is restricted to 10～15 °, and like this, the detector probe of neglecting the rink corner is difficult to aim at any time the flame ignition zone of drift.Therefore when ature of coal, load, air quantity etc. change, it is insensitive that detector just seems, sometimes even malfunction and the wrong signal of putting out a fire of sending out.
(3) contradiction of fiery checking functions and combustion diagnosis:
The fire inspection that existing boiler uses, function singleness, a flame detection has or not, for the boiler extinguishment protection provides signal.But this flame failure protection is passive, and it does not have the function of active prevention fire extinguishing.The fire inspection can not diagnosing combustion flame status and stability, is unfavorable for that the operations staff finds potential combustion failure.
Based on above analysis, the inventor studies improvement to existing flame detecting device, and this case produces thus.
Summary of the invention
Technical problem to be solved by this invention; Be to defective and deficiency in the aforementioned background art; A kind of image flame detecting device is provided, and it can effectively overcome probe in the existing structure because of shortcomings such as high temperature ageing, rough burnings, and applicable to the combustion case of pluralities of fuel.
The present invention is for solving above technical problem, and the technical scheme that is adopted is:
A kind of image flame detecting device comprises imageing sensor, processing module, video frequency collection card, computer and display; Imageing sensor comprises object lens, lens combination and eyepiece, and object lens adopt fused silica glass to process, and its rear end is provided with the lens combination, and eyepiece is located at the rear end of lens combination; Processing module comprises camera and DSP, and the imageing sensor image transmitted accumulates on the target surface of camera, and the output of camera connects the input of DSP; The output of DSP is through the input of biaxial cable connection video frequency collection card, and the output of video frequency collection card connects computer, and said computer controlled display shows current flame image.
Above-mentioned imageing sensor also comprises optical filter, and said optical filter is located at the rear end of eyepiece.
After adopting such scheme, the present invention can accurately and intuitively react the combustion position of current furnace flame immediately, guarantees that boiler safely and steadily runs continuously.
Description of drawings
Fig. 1 is an integrated stand composition of the present invention.
The specific embodiment
Below will combine accompanying drawing, technical scheme of the present invention will be elaborated.
As shown in Figure 1, the present invention provides a kind of image flame detecting device, comprises imageing sensor, processing module, video frequency collection card, computer and display, introduces respectively below.
Imageing sensor comprises object lens, lens combination, eyepiece and optical filter, and wherein, object lens are as primary sensing element; Its working environment is very abominable; Withstand the hyperthermia radiation of burner hearth and washing away of the interior flying dust of stove, also will avoid the dust stratification of minute surface, therefore in the present embodiment; Object lens adopt the molten ash can resist 1200 ℃ to the washing away and high temperature resistant, anti abrasive fused silica glass of minute surface, and heatproof is up to 1400 ℃; The rear end of object lens is provided with the lens combination, is used for that image is carried out optics and amplifies; The rear end of lens combination is provided with eyepiece, is used for accumulating in the image that passes over the target surface of processing module CCD camera; The rear end of eyepiece also is provided with optical filter, in order to improve picture quality.
Processing module comprises camera and DSP, and camera can adopt the CCD camera, and its optical signal with imageing sensor output converts the signal of telecommunication into, sends into DSP again and is converted into vision signal.Processing module is placed the rear end of imageing sensor lens combinations, mainly be because the flame portion temperature is very high, and camera can not be high temperature resistant, thereby guarantees that better camera can gather image under the operating mode of safety.
The output of DSP is through the input of biaxial cable connection video frequency collection card, and the output of video frequency collection card connects computer, and said computer controlled display shows current flame image.
Above embodiment is merely explanation technological thought of the present invention, can not limit protection scope of the present invention with this, every technological thought that proposes according to the present invention, and any change of on the technical scheme basis, being done all falls within the protection domain of the present invention.
Claims (2)
1. an image flame detecting device is characterized in that: comprise imageing sensor, processing module, video frequency collection card, computer and display; Imageing sensor comprises object lens, lens combination and eyepiece, and object lens adopt fused silica glass to process, and its rear end is provided with the lens combination, and eyepiece is located at the rear end of lens combination; Processing module comprises camera and DSP, and the imageing sensor image transmitted accumulates on the target surface of camera, and the output of camera connects the input of DSP; The output of DSP is through the input of biaxial cable connection video frequency collection card, and the output of video frequency collection card connects computer, and said computer controlled display shows current flame image.
2. a kind of image flame detecting device as claimed in claim 1, it is characterized in that: said imageing sensor also comprises optical filter, said optical filter is located at the rear end of eyepiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102957127A CN102506443A (en) | 2011-09-28 | 2011-09-28 | Image flame detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102957127A CN102506443A (en) | 2011-09-28 | 2011-09-28 | Image flame detecting device |
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|---|---|
| CN102506443A true CN102506443A (en) | 2012-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011102957127A Pending CN102506443A (en) | 2011-09-28 | 2011-09-28 | Image flame detecting device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197366A (en) * | 2014-09-15 | 2014-12-10 | 常州宝仪机电设备有限公司 | Multifunctional monitoring lens |
| CN106871155A (en) * | 2015-12-10 | 2017-06-20 | 哈尔滨市三和佳美科技发展有限公司 | Visualization flame monitoring system |
| CN113915637A (en) * | 2021-09-16 | 2022-01-11 | 列斯丽(深圳)技术有限公司 | Heating furnace burner with flame recognition detector |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1308829A (en) * | 1970-06-18 | 1973-03-07 | Peak Technologies Ltd | Flame monitoring equipment |
| WO1989012774A1 (en) * | 1988-06-23 | 1989-12-28 | Allied-Signal Inc. | Solid-state optical flame detector |
| CN201028573Y (en) * | 2007-04-10 | 2008-02-27 | 上海神明控制工程有限公司 | Split type flame detecting device |
| CN201237240Y (en) * | 2008-07-08 | 2009-05-13 | 徐州燃控科技股份有限公司 | Intelligent image flame detection system for combustion chamber |
| CN202281245U (en) * | 2011-09-28 | 2012-06-20 | 南京创能电力科技开发有限公司 | Image flame detection device |
-
2011
- 2011-09-28 CN CN2011102957127A patent/CN102506443A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1308829A (en) * | 1970-06-18 | 1973-03-07 | Peak Technologies Ltd | Flame monitoring equipment |
| WO1989012774A1 (en) * | 1988-06-23 | 1989-12-28 | Allied-Signal Inc. | Solid-state optical flame detector |
| CN201028573Y (en) * | 2007-04-10 | 2008-02-27 | 上海神明控制工程有限公司 | Split type flame detecting device |
| CN201237240Y (en) * | 2008-07-08 | 2009-05-13 | 徐州燃控科技股份有限公司 | Intelligent image flame detection system for combustion chamber |
| CN202281245U (en) * | 2011-09-28 | 2012-06-20 | 南京创能电力科技开发有限公司 | Image flame detection device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197366A (en) * | 2014-09-15 | 2014-12-10 | 常州宝仪机电设备有限公司 | Multifunctional monitoring lens |
| CN106871155A (en) * | 2015-12-10 | 2017-06-20 | 哈尔滨市三和佳美科技发展有限公司 | Visualization flame monitoring system |
| CN113915637A (en) * | 2021-09-16 | 2022-01-11 | 列斯丽(深圳)技术有限公司 | Heating furnace burner with flame recognition detector |
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Application publication date: 20120620 |